Google Maps

Some months ago I looked-up an address on Google maps, I never bookmark Google maps. When I want Google maps I use Google search (I'm funny that way). Now, when I use Google search to ''find'' Google maps something funny happens when I use the presented link, It always opens on the same street page I looked-up months ago!
I can only think Google is keeping note of my IP address, would that be right? I thought I was using proxies to hide my IP.